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Digital data grids for the magnetic anomaly map of North America

Dates

Publication Date
Start Date
1945
End Date
2001
File Modification Date
2013-05-16 14:07:17

Summary

A digital magnetic anomaly database and map for the NorthAmerican continent is the result of a joint effort by theGeological Survey of Canada (GSC), U. S. Geological Survey(USGS), and Consejo de Recursos Minerales of Mexico (CRM). Thedatabase and map represent a substantial upgrade from theprevious compilation of magnetic anomaly data for NorthAmerica, now over a decade old.This report presents three unique, gridded data sets used tomake the magnetic anomaly map of North America. All threegrids have 1-km spacing and are projected to the DNAGprojection. These grids are provided in Geosoft binary gridformat, with two files describing each of the grids (suffixes.grd and .gi).The first grids (NAmag_origmrg.grd and USmag_origmrg.grd) showthe [...]

Contacts

Point of Contact :
Robert P. Kucks
Process Contact :
Peter N Schweitzer, Viki Bankey
Distributor :
DVD distributor: USGS Information Services
Metadata Contact :
Peter N Schweitzer
Originator :
U.S. Geological Survey

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metadata.xml
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29.52 KB application/fgdc+xml

Purpose

This integrated, readily accessible, modern digital database ofmagnetic anomaly data will be a powerful tool for furtherevaluation of the structure, geologic processes, and tectonicevolution of the continent and may also be used to help resolvesocietal and scientific issues that span national boundaries.The North American magnetic anomaly map derived from thedigital database provides a comprehensive magnetic view ofcontinental-scale trends not available in individual data sets,helps link widely separated areas of outcrop, and unifiesdisparate geologic studies.
Reduced-size image of 1000-meter merged gridded data, 1146x1053 pixels, 592k bytes
Reduced-size image of 1000-meter merged gridded data, 1146x1053 pixels, 592k bytes

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Added to Sciencebase on Sat Nov 16 13:47:56 MST 2013 by processing URL <b>metadata.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/4f4e4771e4b07f02db47e1e3">https://www.sciencebase.gov/catalog/item/4f4e4771e4b07f02db47e1e3</a> <br />

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processingUrl http://sciencebase.org/metadata/geo-nsdi.er.usgs.gov/metadata/open-file/02-414/metadata.xml

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